1916] VETERINARY MEDICIlSrE. 785 



established. The sera of normal hogs and those experimentally infected with 

 Bacillus cholera suis, the Ghoii-Suchs bacillus, B. anthracis, Staphylococcus 

 aureus, and also the serum of one hog which was the subject of pneumonia from 

 natural exposure and which died from acute brine poisoning, all reacted nega- 

 tively when tested for complement fixation with S. hyos antigen." 



It is deemed that with the proper technique the method may be used to prac- 

 tical advantage as a reliable, accurate means of laboratory diagnosis of hog 

 cholera. "The results of these experiments support our former conclusions that 

 S. hyos merits serious consideration as an organism possessing specific patho- 

 genic properties in relation to hog cholera." 



Swine tuberculosis: Epidemiology, pathogeny, and comparative evolution, 

 P. Chauss^ (Ann. Inst. Pasteur, 29 (1915), Nos. 11, pp. 556-600, figs. 11; 12, 

 pp. 6SS-647, figs. 5). — The author discusses the subject of swine tuberculosis in 

 detail. Topics considered are the relative morbidity of bovine and porcine 

 tuberculosis, paths of infection in swine, tonsillar and cervical lymphatic infec- 

 tion, intestinal infection, mixed infection, respiratory infection, tuberculosis 

 through castration, the lesions in tubercular swine, a histological study of the 

 lesions with special reference to the pulmonary lesions, and a comparison of 

 swine tuberculosis with that of other species, especially in regard to the 

 pathogenicity. 



A study of gas production by different strains of Bacillus abortive-equinus, 

 E. S. Good and L. S. Corbett (Jour. Infect. Diseases, 18 (1916), No. 6, pp. 

 586-595). — Continuing earlier studies at the Kentucky Experiment Station on 

 the organism (E. S. R., 27, p. 5S0), it was found that in 93 out of 116 trials 

 B. abortivo-equinus produced approximately 2 per cent gas in lactose and 

 slightly less than 2 per cent in 28 out of 56 trials in saccharose. 



The average gas production by the strain of B. enteritidis was about 2 per 

 cent in lactose in 80 per cent of the trials and a slightly smaller amount in 

 saccharose in 1 of 7 trials. The strain of the paracolon bacillus used in these 

 experiments did not ferment lactose or saccharose. 



"B. abortivo-equinus may or may not produce gas in 1 per cent lactose or 

 saccharose broth, even varying in this respect in duplicate and triplicate tests. 

 B. abortivo-equinus possesses as an original physiological characteristic the 

 ability, in most cases, to ferment lactose to a small extent, and also, in some 

 cases, to ferment saccharose to a less extent. This characteristic in all proba- 

 bility has not yet been accentuated by environment. Lactose and saccharose 

 broth can be employed to good advantage In laboratory routine for differentiat- 

 ing B. abortivo-equinus from the colon bacillus, as the gas, when produced, is 

 small in amount ; and, in all probability, dulcite and perhaps raffinose can be 

 used to advantage in differentiating B. abortivo-equinus from other members of 

 subgroup 2 of the colon-typhoid group, but absolute proof as to its identity can 

 only be secured through the use of other tests, such as those for further cul- 

 tural characteristics and the complement-fixation and agglutination tests." 



In the work reported the inverted vial was found to be as efficacious as the 

 Smith fermentation tube. 



Sclerostomes in horses, W. J. Haktman (Montana Sta. Circ. 58 (1916), pp. 

 221-2S6, figs. 8). — The author, having found this parasite to be a source of 

 considerable loss in the Bitter Root and other valleys of the State, presents a 

 general account of it and of the nature of the affection. It is thought that 95 per 

 cent of the horses in the valleys are infected with the worms, though probably 

 not more than one in ten develops noticeable symptoms. 



Concerning nambi-uvu, a disease of dogs, and the causative parasite, 

 Rangelia vitalii. A, Caeini (Centbl. Bakt. [etc.], 1. Abt., Orig., 77 (1915), 

 No. S, pp. 265-271, pis. 2). — The author describes a severe infectious disease of 



